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  <div class="section" id="target-compile-features">
<span id="command:target_compile_features"></span><h1>target_compile_features<a class="headerlink" href="#target-compile-features" title="Permalink to this headline">¶</a></h1>
<p>Add expected compiler features to a target.</p>
<div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">target_compile_features(</span><span class="nv">&lt;target&gt;</span><span class="w"> </span><span class="o">&lt;</span><span class="no">PRIVATE</span><span class="p">|</span><span class="no">PUBLIC</span><span class="p">|</span><span class="no">INTERFACE</span><span class="o">&gt;</span><span class="w"> </span><span class="nv">&lt;feature&gt;</span><span class="w"> </span><span class="p">[...]</span><span class="nf">)</span><span class="w"></span>
</pre></div>
</div>
<p>Specifies compiler features required when compiling a given target.  If the
feature is not listed in the <span class="target" id="index-0-variable:CMAKE_C_COMPILE_FEATURES"></span><a class="reference internal" href="../variable/CMAKE_C_COMPILE_FEATURES.html#variable:CMAKE_C_COMPILE_FEATURES" title="CMAKE_C_COMPILE_FEATURES"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_C_COMPILE_FEATURES</span></code></a> variable
or <span class="target" id="index-0-variable:CMAKE_CXX_COMPILE_FEATURES"></span><a class="reference internal" href="../variable/CMAKE_CXX_COMPILE_FEATURES.html#variable:CMAKE_CXX_COMPILE_FEATURES" title="CMAKE_CXX_COMPILE_FEATURES"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_CXX_COMPILE_FEATURES</span></code></a> variable,
then an error will be reported by CMake.  If the use of the feature requires
an additional compiler flag, such as <code class="docutils literal notranslate"><span class="pre">-std=gnu++11</span></code>, the flag will be added
automatically.</p>
<p>The <code class="docutils literal notranslate"><span class="pre">INTERFACE</span></code>, <code class="docutils literal notranslate"><span class="pre">PUBLIC</span></code> and <code class="docutils literal notranslate"><span class="pre">PRIVATE</span></code> keywords are required to
specify the scope of the features.  <code class="docutils literal notranslate"><span class="pre">PRIVATE</span></code> and <code class="docutils literal notranslate"><span class="pre">PUBLIC</span></code> items will
populate the <span class="target" id="index-0-prop_tgt:COMPILE_FEATURES"></span><a class="reference internal" href="../prop_tgt/COMPILE_FEATURES.html#prop_tgt:COMPILE_FEATURES" title="COMPILE_FEATURES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">COMPILE_FEATURES</span></code></a> property of <code class="docutils literal notranslate"><span class="pre">&lt;target&gt;</span></code>.
<code class="docutils literal notranslate"><span class="pre">PUBLIC</span></code> and <code class="docutils literal notranslate"><span class="pre">INTERFACE</span></code> items will populate the
<span class="target" id="index-0-prop_tgt:INTERFACE_COMPILE_FEATURES"></span><a class="reference internal" href="../prop_tgt/INTERFACE_COMPILE_FEATURES.html#prop_tgt:INTERFACE_COMPILE_FEATURES" title="INTERFACE_COMPILE_FEATURES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">INTERFACE_COMPILE_FEATURES</span></code></a> property of <code class="docutils literal notranslate"><span class="pre">&lt;target&gt;</span></code>.
(<a class="reference internal" href="../manual/cmake-buildsystem.7.html#imported-targets"><span class="std std-ref">IMPORTED targets</span></a> only support <code class="docutils literal notranslate"><span class="pre">INTERFACE</span></code> items.)
Repeated calls for the same <code class="docutils literal notranslate"><span class="pre">&lt;target&gt;</span></code> append items.</p>
<p>The named <code class="docutils literal notranslate"><span class="pre">&lt;target&gt;</span></code> must have been created by a command such as
<span class="target" id="index-0-command:add_executable"></span><a class="reference internal" href="add_executable.html#command:add_executable" title="add_executable"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">add_executable()</span></code></a> or <span class="target" id="index-0-command:add_library"></span><a class="reference internal" href="add_library.html#command:add_library" title="add_library"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">add_library()</span></code></a> and must not be an
<a class="reference internal" href="../manual/cmake-buildsystem.7.html#alias-targets"><span class="std std-ref">ALIAS target</span></a>.</p>
<p>Arguments to <code class="docutils literal notranslate"><span class="pre">target_compile_features</span></code> may use “generator expressions”
with the syntax <code class="docutils literal notranslate"><span class="pre">$&lt;...&gt;</span></code>.
See the <span class="target" id="index-0-manual:cmake-generator-expressions(7)"></span><a class="reference internal" href="../manual/cmake-generator-expressions.7.html#manual:cmake-generator-expressions(7)" title="cmake-generator-expressions(7)"><code class="xref cmake cmake-manual docutils literal notranslate"><span class="pre">cmake-generator-expressions(7)</span></code></a> manual for available
expressions.  See the <span class="target" id="index-0-manual:cmake-compile-features(7)"></span><a class="reference internal" href="../manual/cmake-compile-features.7.html#manual:cmake-compile-features(7)" title="cmake-compile-features(7)"><code class="xref cmake cmake-manual docutils literal notranslate"><span class="pre">cmake-compile-features(7)</span></code></a> manual for
information on compile features and a list of supported compilers.</p>
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